Mining machine



' March 31,1925. ,532,074

E. PLUMLEY MINING MACHINE v Filed March '14, 924- 2 Shuts-Shoot 1' n...Ammumuuuuum i I ELL/5 PLl/MLE) INVENTQ ATTORNEY March 31'. 1925* 11,532,014

v E. PLUMLEY v MINING MACHINE Filed. March 14. 1924 2 SbetS-Sheei 2 Fl(.4. a

[Ll-(5 PLUMLE): INYENTOR all Patented Mar. 31, 1925.

UNITED STATES PATENT OFFICE.

ELLIS PLUMLEY, OF CEREIDO, WEST VIRGINIA, ASSIGNOR F ONE-HALF TO MALTAPLUMLEY, OF RUSSELL, KENTUCKY.

MINING MACHINE.

Application fi1ed March 14, 1924-.

To aZZ whom it may concern:

Be it known that I, ELLIS PLUMLEY, a citizen of the United States,residing at Geredo, in the county of Wayne and State of est Virginia,have invented new and useful Improvements in Mining Machines, of whichthe following is a specification.

This invention relates to mining machines, and more particularly to ahand operated machine.

One of the main objects of the invention is to provide a machine ofsimple construction and operation whichmay be quickly and easilyadjusted for adjusting the boring tool or bit for boring a hole at thedesired angle. A further object is to provide simple and eificient meansfor mounting the feed shaft and associated parts in such manner as tofacilitate turning thereof for suitably positioning the boring tool.Another object is to provide simple and efficient means for securing thefeed shaft and associated parts in adjustment. Further objects willappear from the 'detail description.

I11 the drawings Fig. 1 is a front View of the machine as used;

Fig. 2 is a fragmentary rear view of the machine on an enlarged scale;

Fig. 3 is a section taken substantially on line 33 of Fig. 1;

Fig. 1- is a section taken substantially on line 1 J; 01 Fig. 1.;

Fig. 5 is a detail oil? the :leed nut and as sociated parts;

Fig. (l is a section taken substantially on line 6--6 of Fig. 5.

The machine includes a supporting frame 1 of substantially elongatedU-shape including side arms 1. These arms are connected at their upperends by a heavy ring or collar 2 in which is secured by set screw 2 atubular member 3 through which is threaded a pointed rod 3 provided witha handle 4. A block 5 is secured between the lower end portions of arms1 and receives a tubular member 6 secured in adjustment through theblock by set screw 7. A pointed anchor rod 8 is slidably mounted throughmember 6 and is. secured in adjustment therein by a set screw 9. The rod8 and member (S'provide a telescoping anchor rod whereby the machine maybe accommodated to rooms of unusual height.

Serial No. 699,290. r

The frame 1 provides supporting means for the feed shaft and associatedparts. A disc 10 is provided with a central pin 11 which projectsthrough a plate 12 having lateral sleeves 13 which fit about arms 1? ofirame 1 thus providing a slidable mounting for the disc on the frame.Sleeves 13,

and consequently plate 12 and disc 10, are

The disc 10 is thus pin fromthe plate. Plate 12 is in the form ot' adisc, being disposed concentric with pin 11 and provided with aplurality of radially projecting teeth 16. These teeth are equallyspaced to receive between them finger 17 of one arm of an angle lever 17pivoted at its angle, at 18, on disc 10. The other arm of this leveroperates between disc 10 and a guard strip 19 secured to the disc. Atension spring 20 connects arm 17 of lever 17 to guard strip 19 and actsto normally hold finger 17 in engagement between two adjacent teeth 16of plate 12. By grasping arm 17" of lever 17- and moving it in properdirection to disengage finger 17 from plate 12, the disc 10 may be readily turned about pin 11 so as to adjust the feed shaft and associatedparts, hereinafter reterred to, at the desired. angle.

Disc 10 is provided at the opposite lace thereof. to pin 11 with. ablock. 21 from which extends a stub-shatt 22. This block provides abearing for neck 23 of a bevel gear 2 1 the body 25 of which isrotatably mounted in a pillow block 26 secured to disc 10. The gear 24is provided, within body 25 and neck 28, with inwardly projecting ribs27 which fit into grooves 28 extending longitudinally of a threaded feedshaft A bevel pinion 30 is rotatably mounted on stub-shaft 22 and anoperating crank 31 is secured to this pinion for rotating the same.Shaft 29 extends through a split sleeve or nut 32. This nutis formed intwo sections 33 and 34 which are hingedly connected together and to disc10 by means of a pintle 35 passing through ears 36 formed on the discand interengaging sleeves carried by.

Ill)

sections 33 and 34: of the nut. A'bolt 37 is secured through section34-, section 33 being provided with a slot 33 to accommodate bolt 37. Awing nut 38 is threaded onto the bolt so that the bolt and the nutco-operate to force the two sections 33 and 3a of the split nut togetherthus closing .the nut about shaft 29, the shaft being threaded throughthis nut. Disc 10 is provided with a suitably shaped opening 39 topermit the split nut to be opened, when desired, at which time the hingemounting of this nut is preferably positioned downwardly so that bythreading wing nut 38 off of bolt 37, the nut will open by gravity thusreleasing shaft :29 to permit the same to be readily moved through gear21 for withdrawing the boring tool or hit. As will be noted more clearlyfrom Figs. 5 and (3, disc 10 provided with lingers l0 whichproject intoopening 39, these fingers being positioned to be clamped betweenextensions 33 and 344 of sections 33 and 34, respectively, of nut Thisprovides simple and efficient means whereby the nut is effectuallysecured by the simple act of closing or clamp-- ing it about the shaft29 thus insuring proper aligning of this nut with gear 2%.

When split nut 32 is in operative position and pinion 30 is rotated,shaft 29 is rotated and is simultaneously fed through split'nut Asuitable boring tool or bit ll is secured on shaft 29 so that when themachine is set up in proper position adjacent to the working face in themine, as illustrated in Fig. 1., by turning crank 31 the bit is rotatedand is simultaneously forced into the coal so as to bore out a holetherein. The plate 12 and associated parts permit ready adjustment ofdisc 10 to the desired height,

after which the disc can'be readily adjusted about pin 11 so as toaccurately position shaft 29 at the proper angle for drilling or boringthe hole desired. After the hole has been bored tOthGgPl'OPGl' depth, byopening split nut 32 shaft 29 is released from this nut-and the shaftmay be readily moved or slid through gear 24: so as to withdraw the bit41 from the hole. If desired, the gear 24: can be motor-driven, anysuitable or well known type of motor and driving connections beingemployed for this purpose. As will be understood, changes in details ofconstruction and arrangement of parts of the invention may be resortedto without departing from the ield and scope of the same, and I intendto include all such variations, as fall within the scope of the appendedclaims, in this application in which a preferred form only of myinvention is disclosed.

lVhat I claim is:

In a machine of the character described, a supporting disc, said discbeing provided with an opening, a split nut including two sectionshingedly connected together and to the disc'at one end, and in alignmentwith said opening, the opening permitting the inner section of the nutto be moved into open position, means for forcing said sections towardeach other and for securing them together at the other end thereof, thesections of the nut being provided with elements disposed to'engage withthe disc adj acent to the opening therein so as to clamp the nut to thedisc when said nut is closed, a feed shaft threaded through said nut,and means for rotating said shaft.

In testimony whereof I alfix my signature.

ELLIS PLUMLEYv

